If you bought your original copy from Steam please look here.
It's really easy to upgrade to any higher tier in the alpha.
1. Check that we haven't sold out by visiting prison-architect.com
2. Make a paypal donation of the price difference between your current tier and the one to which you wish to upgrade.
eg. If you have bought the Base Pack for $30 and wish to get your name in the game ($50) you need to make a donation of $50 - $30 = $20.
3. Mail your paypal receipt for the donation together with your email address to firstname.lastname@example.org.
That's it! We'll upgrade you and you'll receive an email when it's been done.If you bought from